v4.1.4a

Calendar - Adds the Request response and Allow new time proposals options

Fixes the attachments error under IMAP accounts

Fixes the Calendar search error

Fixes other bugs and Improves performance

File hashes:
MD5: 69a1e815e4a75348817b31e46d2be254
SHA-1: c5801dfa7e12db3dd9423c25848c900908e47fca
SHA-256: c38cae6ead2cc29e36454473f6c9f3e5572a69433eeacde04e245bb2a312dcd7
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